Cutting tool



LE ROY E. JOLLS. CUTTING TOOL.

APPLICATION FILED uA'YH, 19H.

Patented Jan. 17,1922.

2 $HEETS$HEET I.

INVENTO 14 /1203 filfolla;

wlzz ATTORNEY LE ROY E. JOLLS.

CUTTING. IOOL.

APPLICATION n.o. HAYII, 1917.

' Patented Jan. 17, 1922.

2 SHEETS-SHEET 2.

. ATTORNEY /////////fl///////////M//// Wk N tool-embodying another form of the inventhe chuck ofa drill press or other suitable UNITED STATES PATENT OFFICE.

LE ROY E. JOLLS, O1 DETROIT, MICHIGAN, ASSIGNOR TO PACKARD MOTOR CAB COMPANY, OF DETROIT, MICHIGAN, A CORPORATION OF MICHIGAN. I

' CUTTING TOOL.

Application filed ma 17,.

To all whom it may concern.

Be it known that I, Ln ROY E. JOLLS, a citizen of the United States, and .resident of Detroit, Wayne County, State of Michigan, have invented certain new and useful Improvements in Cutting Tools, of which-the following is a specification.

This invention relates to improvements in cutting tools and particularly to improvements in cylinder head donning tools.

The manufacture of cylinders for a hydrocarbon motor calls for the. step of shaping the interior of the cylinder head. As usually made the cylinder head is somewhat irregular in outline and at one pointflat least overhangs the cylinder proper. In order to out out or dome the overhanging portion a tool known in the trade as a doming tool is employed. One object of this invention is to provide a tool of this character which can be readily adjusted to cutting position without affecting the. driving connections.

Another object of the invention is to'pro- .vide a gearing mechanism made up of an tioned in the tool. o

Other objects of the invention will appear from the following description taken in connection with the drawings which form a part of this specification, and in which:

Fig. 1 is a sectional elevation of part of a cylinder of a hydrocarbon motor and a doming tool embodying one form of the'invention; Figs. 2 and 3.are transverse sections taken on the lines 2-2 and 33 respectively of Fig. 1 in the direction indicated by the arrows;

Fig. 4 is a, sectional elevation of a doming tion; f I Fig. 5 is an end elevation taken from the ri ht of Fig. 4; and j ig. 6 is a sectional plan view of one form of cylinder in which such a tool may be employed. 1

In the drawings the reference character A is used to designate a motor cylinder of Specification of Letters Patent.

Patented J an. 17, 1922. 1917. Serial No.-169,252.

deepest point to coincide with the circular walls at D- A doming tool must therefore be capable of making this varying out.

One form of such a doming tool as. set forth in Figs. 1, 2 and 3 has a frame or caslng 10 composed of a central portion 11 and two projections or supporting. members 12" and 13 extending from opposite sides of the central portion. The central portion-11 and projection 12 are in one part 14 of the frame while the projection 13 is in the other part 15. The two parts are threaded into each other at 16 and a set screw 17 is employed to hold the parts fixed. A recess 18 is provided in the central portion 11 and passages 19 and 20- leading from the recess 18 through the projections 12 and 13. The recess and passages are all tubular and differ in diameter, the recess 18 being the largest and the pas-. ,sage 19 the smallest. The center line of the recess 18 when extended forms the center line of the passa'ge 19. The recess and passage may therefore be referred to as concentric.

The center line of the recess 18 andpassage 19 and the center line of the passage 20 are however parallel and the passage 20 may therefore be describedas eccentric to the recess 18 and the passage 19.

Positioned in the passage 20 is a sleeve 2.1 having an eccentric passage 22 therethrough and flanges 23 at the inner-end projecting into the recess 18. The. sleeve while'closely fittmg in the passage may be rotatedon its axis "for a purpose to be described later;

bearings 24. are provided in the passages 19 and 22 through which extend shafts 25 and M 26 respectively. The shaft 25 projects from the passage 19 and is provided at the outer end with notches 25 for engagement with machine (not shown) At the inner end of the shaft 25 and, as

here shown, integral therewith is an internal gear 27 located to turn in the recess 18.

The shaft 265 also projects from its passagecylinder head and'at the inner end with a pinion 29 which projects'into the recess 18 and meshes with the internal gear 27. The

shaft 25 as will be iinderstood from the' above description is the driving element and the shaft. 26 the driven element, power being transmitted from the driving to the driven element through the gear 27 and pinion 29.

Embedded in the bottom of the gear and of the pinion are bearing plates 30. The plate in the gear has two races 31 and 32 and the plate in the pinion has the race 33 in which races work ball bearings 34 the Y balls bein held in position by a retaining ring 35. he plate 30 on the pinion has a center projection 36 over which the retaining ring 35 is slipped. and positioned.

The rotation -of the sleeve 21 referred to' above is carried out in. the following manner. 'A slot 37 is cut through the wall of the central portion 11 and extends, as shown in Fig. 3, about one quarter way around. Throu h this slot asses a rod 38 threaded into a olein the ange 23 of .thesleeve 21.

The rod if extended would pass through the center of the sleeve and the latter will therefore be rotated on its axis as the former is moved in the slot 37. The amount of rotation permitted the sleeve 21 by the movement ofrod 38 'inslot 37 is so limited'that the teeth of the pinion 29 will always be in a mesh with the teeth of the gear 27 suflicie'ntly to transmit the driving motion of the shaft 25 to the shaft 26.

Diametrically opposite the hole receiving the rod 38 is a second hole which has alocking function. Threaded into a hole in the central portion 11 is a cap 39 in which is mounted a pin 40. A projection 41 from the pin extends through the cap-and has secured thereto a handle 42. Coiled around the projection 41 within the cap is a spring 43 which bears against the rear of the pin and tends to force it into the hole in the sleeve. 'When the sleeve is so anchored the shaft 26 is, as shown, in the position nearest I the edge of the projection 13 so that the T as threaded into the central portion 11.

Suitable olling devices 45 are provided for.

doming head projects beyond the side of the tool in its extreme cutting position.

IA handle 44 for the tool-is here shown lubricating-the moving parts, the construction of these devices however, does not enter into this invention and they will-not be described in detail.

' A plate 146 is provided for properly positioning thefldomin'g tool in the cylinder. The" late as here-shown has. a hole substantially the size of the projection 13 and 'is slipped over it up to "the central. portion 11. A'groove 47 in the projection and a set screw 48 in the plate permit relative rotary movement but prevent relative lateral movement. The tool is here shown as working ona motor cylinder having an inclinedbase and the face of the plate-is correspondingly inclined. Obviously, the face of the plate employed will be inclined according to the form of cylinder to be domed. 'The inclined portion 49 at its lower end provides a notch- 50 the proper distance from the doming tool and into which the cylinder flan e 51 will seat. Holding the cylinder in p ac'e is a bar 52 pivoted at the lower end .of the plate 46 and clamped upon the upper side of the flange 51 by the fol owing means.

Pinned to the bar 52 by a key 53 1s a Bolt 54 which extends through .an opening in the plate 46. Bolted to that plate is' a plate 55 having a slot: therein through which the bolt 54 can ash. A nut 56 is threaded on the end of t e bolt 54 and when tightened against the plate will draw the bar against the cylinder flange. I

.The operation of the doming tool is believed to be obvious-from a consideration of the drawings and specification but a short;

description thereof may be in order. The driving shaft is fitted into the chuck of a drill press or other machine and the doming pinion 29 and shaft 26. The anchoring pin 40 is now withdrawn and the sleeve 21 'rotated by the handle 38 thus moving the doming head around into its inoperative position in which-it does not overhang the projection or supportingmember 13. The head being head set in rotation through the gear 27,

in this positlon the tool is now inserted in the cylinder and the cylinder is clamped in the position shown in Fig, 1 by the bar 52 against the plate 46. The operator now moves the bar 38 slowly along the slot 37 at the same time causing the doming head to be adjusted laterally or to project further out from the side of its supporting mem- .ber 13. This will result in cutting a curve at the cylinder head the deepest being when the cutter is in theposition shown in the drawing. The pin now slips .into place and indicates that the deepest cut is now bemg made.

The operator now withdraws the pin andcontinues to move the bar 38 in the .slot until it'reaches the other end and the head is again in the inoperative position, i. e., withdrawn from beyond the edge of the proj ection 13. The tool" is now unclamped through it from end to .end. Mounted in from the cylinder and withdrawn. It will be noticed that the gearing mechanism emthepassage 61 is a sleeve 62 which also has in its turn a tubular passage 63 eccentrically bored. At either end of the passage the handle 76 that when .the band is fixed in an upper position it will include both handles and when in a lower position is is' provided bearings 64 in which'is mounted 'below the end of the handle 81. Thus it is a shaft 65 having fastened at the outer end a doming head 66 and at the inner end a bit 67 provided-with notches 68. The bit end is placed in the chuck of a drill press or other suitable machine and the head 66 rotated.

The bit 67 is ositioned by the pin 0'. key

69 and the portion of the shaft between the The frame 60 has a circular ridge or pro jection 72 and behind it is a collar 7 3 having a rectangular outline. The collar is recessed to enclose the ridge 72 and has an inclined face whichcontacts with the cylinder A. Stops 74. are provided on the collar 73 which engage the outer edge of the cylinder flange to insure the properpositioning of the tool in the cylinder.

Threaded on the frame 60 behind the collar 73 is a-second collar 75 projecting from which is an arm or handle 76. The collar 7 5 carries on the faceaway from the collar 73 a circular projecting flan e 77 threaded on its outer cylindrical sur ace to receive a cap 78 slippedover the sleeve 62 and having the interior of the projecting flan e correspondingly threaded to engage t e flange 77. Threaded onto the sleeve 62 between the frame 60 and the cap '7 8 are nuts and washers 79. In the cap are provided set screws 80 which are adapted to contact with the circular flange 77 and position the cap 78 with reference to the collar 75. The collar 75, cap 78 and nuts and washe'rs 79 act to positively hold the sleeve in a predetermined endwise relation to the frame. The washers however, permit relative rotary movement for the purpose to be disclosed hereafter. Pinned to that portion of the sleeve 62 projectin beyond the cap 78 is a handle 81 adapt to be oscillated to turn the sleeve 62 and shaft 65 about the center line of the former. A securing device is provided to fastenthe handles 76 and 81 together. This device comprises a band 82 fixed on the handle 76 by a set screw 83 on the band, which engages a groove-84 on the handle. Obviously the band may be shifted by loosening the set screw sliding it to the desired position and tightening the screw again. The handle 76 has an inclined portion between the collar 75 and the groove 84 so that the lower part which carries the groove is adjacent and parallel to the handle 81. The band 82 has a circumference sufii'cient to enclose both handles and the handle 81 is so much shorter than be operated similarly to the first embodiment described that is the tool is connected to the chuckof a drill press and the shaft carrying sleeve is rotated on its axis advancing and retracting the doming tool between its inoperative position and its extreme cutting position. Furthermore it will be noted thatthis formof tool is not' clamped to the cylinder but is merely positionedthereon by the pins 7 4. which engage the cylinder flanges. Through this construction the tool as a unit can be rotated with the doming head at the extreme position to dome out to the same depth a larger portion of the cylinder head than is possible with the first embodiment. v

While two forms only ofdoming tools embodyin the invention have been shown and descri ed it will be obvious that other forms may be made which will fall within the scope of the invention asset forth in the annexed claims.

Having thus described my invention, what ing a frame having a tubular central'portion and tubular projections at opposite sides from said central portion, bearing sleeves in each ,of said projections, a doming head carrying shaft eccentrically mounted in one of said bearing sleeves, a. driving shaft concentrically mounted in the pther of said bearing sleeves and means located in said central portion for connecting said shafts.

2. A cylinder head doming tool comprising a frame, having a tubular central portion and tubular projections at opposite sides fromsaid central portion, bearing sleeves in each of said projections, a-doming head carrying shaft eccentrically mounted in one of said bearing sleeves, a driving shaft concentrically mounted in-the other of said bearing sleeves and gearmg mechanlsm located in said central portion for connecting said shafts.

' ing a frame, having a tubular central portion and tubular prejections at opposite 3. A cylinder. head'doming tool compris sides from said central portion, bearing J sleeves in each of said projections,-a domin head carrymg shaft eccentrlcally moun te in one of said bearing sleeves, a dr1v1n shaft concentrically mounted in the other of said bearing sleeves and internal gear' and pinion mechanism located in said cen-.

tral portion for connecting said shafts.

4. A power transmitting device compris-.

ing an elongated frame, having central tubular'recess and passages from said recess to the ends of the frame, one of said pas sages being concentric and the other eccentric with respect to said recess, a concentric bearing sleeve in said concentric passage and an eccentric bearing sleeve in Sflld eccentric passage, a shaft mounted-in each of said bearing sleeves and gearing located in said recessAfor connecting said shafts.

5. ing an e ongated framehaving a tubular recess at the center and tubular passages therefrom to the ends of said frame, one of said passages being eccentric with respect to said recess, bearing sleeves in said passages, a driving element mounted 1n the bearing sleeve in one of saidpassages, an internal gear in said recess securedto the end of said element, a driven element mounted in the bearing sleeve in-said eccentric passage, a pinion at the end of said driven element meshing with said internal gear and means forshifting the bearing sleeve in said eccentric as- I I c sage-to change the posltion of said driven element in said eccentric passage and relatively to said driving element.

6. The combination with a piece to be operated upon, of a frame adaptedto be r etained against movement relative to said piece,- a tool shaft mounted for lateral adjustment in said frame, a driving shaft, and

gearing between said shafts including an internal gearon the driving shaft,

7. The combination with a piece to beioperated upon, of a casing adapted to here tained against movement relative to said piece, a tool shaft mounted for lateral adjustment in said casing, a driving shaft, and gearing in said casing between said shafts includin an internal ear on the drivin g g V v a:

shaft.

'8. The combination with a piece to be operated upon, ofa casing ada ted,to be retained against movement re ative to said piece, a tool shaft mounted for lateral ad- .justment in said casing, adriving shaft, and

gearing between said shafts including an internal gearon one of said shafts.

ower transmitting device comprisv 9. A tool comprising anelongated casing, a drivin shaft supported in a hearing at one end oft e casin and havin a gear inside the casing, a driven shaft. for the cutting head havlng a gear in the casing in mesh with. the first gear, and meansfor laterally sleeve being nearly coaxial with the driving shaft so that the gears will remain in running meshas the sleeve is oscillated.

11. A cyllnder head'dom'in'g tool comprisin a casing part adapted to be secured to the cy inder to be operated upon, a doming tool shaft mounted for lateral adjustment therein, a pinion on said shaft, and an internal gear mounted to rotate iii said casing part .and remain in running'mesh with said pinion in the various adjusted positions of said tool shaft.

12. A cylinder head doming tool comprising a guiding part adapted to be inserted in the cy mder, a bearing sleeve in said guiding part having means for oscillating. it in the guiding part, an eccentric bearing in said sleeve, a doming head shaft mounted in said bearing, and means for driving said shaft. 13. A cylinder head doming tool comprismg a guiding part adapted to be inserted in the cylinder, an eccentrically mounted bearing'sleeve in said guiding part having meansfor oscillating it in the uiding part, an. eccentrically mounted shaft and means for dri ving said shaft.

14. A tool comprising a guiding part external cylindrical form, a bearing sleeve part eccentrically 100 mounted in said guidin to the periphery of the f atter, means for "Os-- cillatin said sleeve, a tool shaft mounted; eccentrically in said sleeve, and means for driving said shaft.

'In testimony whereof I afiix my si in said sleeve,

aturei. '105 j I LEROY E.'J LLS. 

